Firstly I posted here because I would like mature, beneficial information to help me identify exactly what opinion I should have about this. Convince me.
Whether that be with undeniable scientific evidence or some crazy self thought of conspiracy theory.

Also, I'd like to state that I actually believe myself to suffer this a lot more then someone other people. I know that sounds ignorant as I have no idea, but maybe you will understand what I mean by the time I finish typing this all out.

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(Please keep in mind I do believe it's a disorder, but I do have some other mixed opinions too).

Let's start by asking: How does one get a diagnosed?

Well to my understanding, a person believed to be suffering from symptoms such as those from ADHD would usually speak to a doctor who will generally refer them to a specialist (that being a Psychologist or Psychiatrist).
After this process the specialist will interview the patient and ask a few questions or maybe get the patient to investigate it further by observing their own behaviour.
Maybe on top of that there will be a computer questionnaire or similar.

But generally, if the patient believes they have ADHD they will be eventually diagnosed as so. Even if the patient believes they do have ADHD but the specialist doesn't diagnose them the patient will obviously see other specialists until they are diagnosed. After all ultimately, it comes down to the 'sufferer'. The specialists just try to understand through our detailing. They try and understand our perspectives. But in reality, their judgement will never be exact. Or even in some cases anywhere near exact.

From my experience specialists don't even seem that concerned, they are quite willingly happy to prescribe drugs straight away. Even after just a few questions.
-Which brings me to my next point:

If it is the case where it's ultimately up to the 'sufferer' to presume whether they want to get diagnosed as having ADHD it makes me question well obviously there has to be some false diagnoses.

How can anyone be proven physically that they actually have this disorder?

It's nothing that can be physically proven via medical evidence is it?
It's done by an interview process.
Unlike a breast cancer, a broken leg and AIDS. - To name a few.

Yes I do believe true sufferers have certain 'abnormal' brain activity which disables them from being attentive, patient etc etc etc etc.

Okay, so let's talk about 'Normal'. What is this word Normal?

"In behavior, normal refers to a lack of significant deviation from the average. The phrase "not normal" is often applied in a negative sense (asserting that someone or some situation is improper, sick, etc.) Abnormality varies greatly in how pleasant or unpleasant this is for other people." /wiki

Normal is a word for explaining what the majority of a given group feels.

So in saying that, a group of funny people. Would they be suffering from humeroussyndrome? What about a group of sarcastic people? SarcasticDisorder? Inability to be serious?
What about a group of overly emotional people? A group of extroverts? A group of introverts? Tall people? People with smelly toes? People who like the beach? People who like the mountains?
Then what about people who are motivated from cultural upbringings?
What about motivated from a future goal?
What about people who don't seem motivated as they don't have any?
People who dislike studying? Dislike how society puts you to work in order to live a 'normal' life?

If you are sort of understanding my analogies you will understand that if someone benefits with something, they also lack something else.

There isn't a 'Normal' person in existence. It isn't possible. There is not one single soul who the billions of people in the world compare to.
Yes maybe that person is better at concentrating but then maybe he is always negative? Would that then be depression? Or maybe he can't run for long periods of time due to a heart condition. Or maybe he isn't comfortable in his body. Maybe he can't understand quantum physics as he just can't get his mind around it.

There are always people who are good at something and bad at something else, to summarise. And there isn't a normal.

So what are mental conditions/disorders/syndromes then?

Aren't they just ways of grouping our similar symptoms?
Aren't they just a way of diagnosing someone so they feel better about themselves that they are grouped into a category of 'normal' for that one condition?
Maybe it's a way of making money for the drug companies?
Maybe it's a way of scientists keeping their jobs?
Doctors?
(Don't get me wrong I do understand my medication works. I can obviously vouch for that. And I wouldn't trade that for anything).

But to me, that is a similar analogy of grouping someone who has similar symptoms to someone else. That in turn gets rationalised by having a certain conditions. Like overly tall people.

Isn't it just how they developed? Isn't it just how I developed that I have these opinions as I'm typing now? That's personality right? Or do I have some sort of inability-to-think-as-you-think-I-should-think-syndrome?

My point is, what is personality? And how does that differ to a disorder?

I have seen maybe people who suffer from exactly the same symptoms well maybe not to the extent or full force of it. Maybe some do. Even more so, but they never get diagnosed? So does that mean they don't have ADHD?

A person could have a horrific dreams about transforming snails training elephants to fight maple flavoured asteroids from Mars? Now if two people have this condition and they seek help, that condition could turn into a medical disorder. Now within that disorder those two people are classified as 'Normal' without any actual physical similarities. Then doctors may try to explain why this could be happening. What if it is a coincidence?
Obviously that is a rare case. It probably hasn't happened yet.

But in terms of ADHD even undiagnosed 'Normal' people may suffer from some or a few of the symptoms. Maybe all but it doesn't affect them enough to seek help and get the diagnoses.

Maybe someone with 'ADHD' got diagnosed with Bi-Polar? But no one ever knew because the specialist diagnosed them incorrectly? It happens all the time.

It could be, that this whole disorder like many other things in life is just grouped because out of the odd 10 billion people in the world there are bound to be similarities between us. Could ADHD be one of those?

Then again, I know people in my class who won't pay attention because they can't be bothered. They would rather play video games all day and disregard what anyone says. Do they have ADHD? Or do they just lack motivation?

I assume lots of people out there use ADHD as a reason to stay unmotivated and seek potential abusing of medication to keep themselves happy. And it does happen. Hence why Governments try their best to control these drugs. And hence why some concerned and particularly intelligent specialists go the lengths to diagnose their patients appropriately.

So anyway, if you managed to read through that. (Wow you must be bored, wait.. aren't you medicated? How were you able to pay attention to everything I just wrote?) - Sorry I'm just trying to make people think a little outside the box. Or perhaps maybe it is I that needs to do so.

I'm not trying to spark an argument here or a flame war.
I believe it's a disorder, I just think there may be many posers who actually don't suffer as much as the 'regular' person with ADHD would. AND I'D REALLY like to know your opinions.

Also, what is with the majority of users on this site stating what their drug dosage is, and how much they take. It seems to me like they are proud of what they take, and how much. Their dosage and drug does not have any benefit on any other users as every drug affects everyone individually and uniquely.
So why state it? That proves to me, that people want to get diagnosed for the help of the medication as opposed to sorting their own life's problems out firstly.

TL;DR
1) IS THERE A PHYSICAL WAY OF DIAGNOSING THIS CONDITION FROM A RELIABLE SOURCE SUCH AS A CRT SCAN OR EQUIVALENT RATHER THEN JUST ASSUMING YOU HAVE SIMILAR SYMPTOMS AS OTHER SUFFERERS?

3) DO YOU BELIEVE IT IS PURELY A DISORDER AND THAT EVERYONE ON THAT HAS BEEN DIAGNOSED WITH ADHD HAS ADHD? OR DO SOME PEOPLE USE THIS AS AN EXCUSE TO NOT LOOK FURTHER INTO THEIR MENTAL CONDITION AND MAYBE BE DIAGNOSED WITH SOMETHING ELSE. (keeping in mind, incorrect diagnoses is as common as correct ones)

4) DO YOU THINK IT IS PERSONALITY WHICH COULD BE SIMILAR THAT COULD DEFINE WHETHER A SUFFERER HAS THIS DISORDER OR NOT?

5) WHAT WOULD A 'NORMAL' PERSON FEEL AND REACT TO ON OUR MEDICATIONS? WOULD THEY BENEFIT TOO? (illegal drug users state they can concentrate and pay attention similarily even if they could already naturally not be impulsive or inattentive or hyperactive.

I believe I am a true, heavy sufferer, just by talking to me you can tell too. But then again, everyone thinks this. Who can prove this though? My point it all seems a little inaccurate in places.

Thoughts would be great, thanks for taking the time. I tend to expand alot of what I wish to discuss. But this has been on my mind lately, and with the medications I am able to write at least some (yes I was thinking alot more before, but that is gone now) of what I am/was thinking. And can express it hopefully clearly enough for other readers to understand and respond to.

There is to TL;DR TL;DR. I'd appreciate for you to partake in this discussion.
Thanks!